<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <style>
        .box {
            position: relative;
            width: 493px;
            height: 436px;
            border: 1px solid #cccccc;
            margin: 0 auto;
        }
        .up {
            position: absolute;
            top: 0;
            left: 0;
        }
        .down {
            position: absolute;
            bottom: 0;
            right: 0;
        }
    </style>
</head>
<body>
    <!-- <img src="./img/adv.jpg" alt=""> -->
    <div class="box">
        <img src="./img/pic.png" alt="">
        <img class="down" src="./img/br.gif" alt="">
        <img class="up" src="./img/top_tu.gif" alt="">
    </div>
</body>
</html>